package com.example.lastwork;

import android.app.Activity;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;

import androidx.fragment.app.Fragment;

import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;

/**
 * A simple {@link Fragment} subclass.
 * Use the {@link FourthFragment#newInstance} factory method to
 * create an instance of this fragment.
 */
public class FourthFragment extends Fragment {

    // TODO: Rename parameter arguments, choose names that match
    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
    private static final String ARG_PARAM1 = "param1";
    private static final String ARG_PARAM2 = "param2";
    private static final String TAG = "login";
    private static FourthFragment mf;
    Button loginin;
    Button register;
    private FragmentInteraction listterner;

    // TODO: Rename and change types of parameters
    private String mParam1;
    private String mParam2;

    public interface FragmentInteraction {
        void process(String str);
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);

        if(activity instanceof FragmentInteraction) {
            listterner = (FragmentInteraction)activity; // 2.2 获取到宿主activity并赋值
        } else{
            throw new IllegalArgumentException("activity must implements FragmentInteraction");
        }
    }
   public FourthFragment() {
        // Required empty public constructor
    }

    /**
     * Use this factory method to create a new instance of
     * this fragment using the provided parameters.
     *
     * @param param1 Parameter 1.
     * @param param2 Parameter 2.
     * @return A new instance of fragment FourthFragment.
     */
    // TODO: Rename and change types and number of parameters
    public static FourthFragment newInstance(String param1, String param2) {
        FourthFragment fragment = new FourthFragment();
        Bundle args = new Bundle();
        args.putString(ARG_PARAM1, param1);
        args.putString(ARG_PARAM2, param2);
        fragment.setArguments(args);
        return fragment;
    }

    public static FourthFragment getFourthFragment()
    {
        if(mf == null){
            mf = new FourthFragment();
        }
        return mf;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        if (getArguments() != null) {
            mParam1 = getArguments().getString(ARG_PARAM1);
            mParam2 = getArguments().getString(ARG_PARAM2);
        }
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_fourth, container, false);

    }

    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        loginin = getActivity().findViewById(R.id.button2);
        register = getActivity().findViewById(R.id.button3);
        loginin.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(getActivity(), login.class);
                startActivity(intent);
            }
        });
        register.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(getActivity(), register.class);
                startActivity(intent);
            }
        });
    }

    @Override
    public void onDetach() {
        super.onDetach();
        listterner = null;
    }


}